C50.A1 – Malignant inflammatory neoplasm of right breast

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of breast (C50)

Billable code

ICD-10-CM code C50.A1
Code
C50.A1 (claims format: C50A1)
Description
Malignant inflammatory neoplasm of right breast
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
2. Neoplasms (C00-D49)
Block
C50 Malignant neoplasms of breast (C50)
Parent codes
C50 › C50.A

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

C50 – Malignant neoplasm of breast

Includes:
  • connective tissue of breast
  • Paget's disease of breast
  • Paget's disease of nipple
Excludes1 (not coded here):
Use additional code:
  • code to identify estrogen, and other hormones and factors receptor status (Z17.-)

C50.A – Malignant inflammatory neoplasm of breast

Applicable to:
  • Inflammatory breast cancer (IBC)

Related codes in C50.A

Frequently asked questions

What is ICD-10 code C50.A1?

C50.A1 is the ICD-10-CM code for malignant inflammatory neoplasm of right breast, in the block C50 (Malignant neoplasms of breast (C50)).

Is C50.A1 a billable code?

Yes. C50.A1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does C50.A1 belong to?

It belongs to category C50 – Malignant neoplasm of breast.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.